Plastics Compounding interview questions part 1
Plastics Compounding interview questions part 1
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Total Questions: 20
1. Usually the polymer resin is mixed with four to ten ingredients during the fabrication to impart useful properties to the finished articles. This is called mix.
Correct Answer is : TRUE
2. __________ acts as a binder in plastics.
Correct Answer is : Resins
3. ___________ increases the flexibility of the polymer.
Correct Answer is : Plasticizers
4. Plasticizers are used to get the ___________ between the polymeric molecules.
Correct Answer is : Freedom of movement
5. Plasticizers ___________ the strength of the plastics.
Correct Answer is : Decrease
6. __________ makes the polymers impermeable to x-rays.
Correct Answer is : Barium salts
7. The percentage of the fillers is up to ___________ total moulding mixture.
Correct Answer is : 0.5
8. Which of the following are used as the fillers?
Correct Answer is : Wood flour
9. __________ prevent moulded article from sticking to the fabrication equipment.
Correct Answer is : Lubricants
10. Lubricants are used to prevent the moulded article from _________
Correct Answer is : Sticking
11. Which of the following are not used lubricants?
Correct Answer is : Salts
12. ___________ is used to improve the thermal stability during polymerisation.
Correct Answer is : Stabilizers
13. Which of the following is a stabilizer?
Correct Answer is : White lead
14. Compression moulding is applicable to ___________
Correct Answer is : Both thermo plastic and thermo setting resins
15. How many types of fabrication methods are there?
Correct Answer is : 7
16. In compression moulding, the cavity is filled with ________ plastic.
Correct Answer is : Liquid
17. Curing means the time given to the polymer for setting.
Correct Answer is : TRUE
18. The cost of production for the injection moulding is ___________
Correct Answer is : Low
19. Which of the following is the part of the injection moulding device?
Correct Answer is : Bottom mould
20. In transfer moulding the powdered compounded plastic is in the chamber which is applied __________ temperature and ________ pressure.
Correct Answer is : Minimum, high
